Planck's radiation law
the law that energy associated with electromagnetic radiation, as light, is composed of discrete quanta of energy, each quantum equal to Planck's constant times the corresponding frequency of the radiation: the fundamental law of quantum mechanics.
the law giving the spectral distribution of radiation from a blackbody.
martial lawRead more in this article about some frequently asked questions and fun facts related to our definitions.
Jim Crow lawsRead more in this article about some frequently asked questions and fun facts related to our definitions.
Origin of Planck's radiation law
First recorded in 1905–10; named after M. K. E. Planck
Also called Planck radiation formula, Planck's law.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019